US4169670AExpiredUtility

Device for indicating the completion of winding of the shutter of a camera

32
Assignee: ASAHI OPTICAL CO LTDPriority: Sep 3, 1976Filed: Sep 2, 1977Granted: Oct 2, 1979
Est. expirySep 3, 1996(expired)· nominal 20-yr term from priority
G03B 17/18
32
PatentIndex Score
0
Cited by
3
References
2
Claims

Abstract

A camera with a focal plane shutter is provided with a device for indicating the completion of the winding of the shutter. The indicating device is a spring biased lever having one end which engages a metal blade or blade driving member of the shutter when the shutter is wound to rotate the lever against the biasing force of the spring. Under this condition a red portion of the other end of the lever is viewable through a window in the camera body. When the shutter is released, the metal blade or blade driving member moves to a retracted position allowing the lever to rotate under the biasing force of the spring. As a result a black portion of the other end of the lever is viewable through the window.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. In a camera with a focal plane shutter, wherein the shutter comprises a plurality of metal blades and is housed within a shutter block having a cut portion through which a part of the shutter mechanism projects when the shutter is wound, a device for indicating the completion of the winding of the shutter comprising: an indicating lever mounted within the camera body with one end of the lever positioned to engage said part of the shutter mechanism and the other end viewable through a window in the camera body, wherein said part of the shutter mechanism is a metal shutter blade.   
     
     
       2. In a camera with a focal plane shutter, wherein the shutter comprises a plurality of metal blades and is housed within a shutter block having a cut portion through which a part of the shutter mechanism projects when the shutter is wound, a device for indicating the completion of the winding of the shutter comprising: an indicating lever mounted within the camera body with one end of the lever positioned to engage said part of the shutter mechanism and the other end viewable through a window in the camera body, wherein said part of the shutter mechanism is a blade driving member.

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